DE69515773T2 - Monolithic, porous support for filtration membranes - Google Patents
Monolithic, porous support for filtration membranesInfo
- Publication number
- DE69515773T2 DE69515773T2 DE69515773T DE69515773T DE69515773T2 DE 69515773 T2 DE69515773 T2 DE 69515773T2 DE 69515773 T DE69515773 T DE 69515773T DE 69515773 T DE69515773 T DE 69515773T DE 69515773 T2 DE69515773 T2 DE 69515773T2
- Authority
- DE
- Germany
- Prior art keywords
- channels
- support
- section
- carrier
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 title description 5
- 238000005192 partition Methods 0.000 claims abstract description 14
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
- B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/066—Tubular membrane modules with a porous block having membrane coated passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/06—Details of supporting structures for filtering material, e.g. cores
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen monolithischen porösen Träger, insbesondere aus keramischem Material, für eine Filtermembran.The present invention relates to a monolithic porous carrier, in particular made of ceramic material, for a filter membrane.
Diese Membranen sind seit langem für Ihre Trenneigenschaften bekannt und entwickeln sich schnell in zahlreichen Einsatzbereichen wie etwa im Landwirtschafts- und Nahrungsmittelbereich, in der Biotechnologie, bei der Behandlung von Trink- und Brauchwasser, in der pharmazeutischen Industrie und in der Atomindustrie.These membranes have long been known for their separation properties and are rapidly developing in numerous areas of application such as agriculture and food, biotechnology, drinking and industrial water treatment, the pharmaceutical industry and the nuclear industry.
Diese Monolithen, wie beispielsweise die in US-A-4069157, EP-A- 470340 und EP-A-585152 beschriebenen, die mit Kanälen durchsetzt sind, an denen die Membranen abgelagert sind, haben den doppelten Vorteil, daß sie eine große Austauschoberfläche der Membran pro Volumeneinheit und einen sehr guten Durchlässigkeitsfaktor aufweisen. Der Durchlässigkeitsfaktor ist beispielsweise in US-A-4069157 definiert.These monoliths, such as those described in US-A-4069157, EP-A-470340 and EP-A-585152, which are interspersed with channels on which the membranes are deposited, have the double advantage of having a large membrane exchange surface per unit volume and a very good permeability factor. The permeability factor is defined, for example, in US-A-4069157.
Außerdem weisen diese Träger und Membranen insbesondere, wenn sie aus anorganischem und/oder keramischem Material bestehen, wegen ihrer mechanischen Widerstandsfähigkeit und ihrer chemischen, biologischen und thermischen Trägheit eine sehr lange Benutzungslebensdauer auf und können unter extremen Benutzungsbedingungen (pH, Temperatur, Druck, Strahlungen ...) funktionieren.In addition, these supports and membranes, especially when made of inorganic and/or ceramic material, have a very long service life due to their mechanical resistance and their chemical, biological and thermal inertia and can function under extreme conditions of use (pH, temperature, pressure, radiation, etc.).
Diese Träger führen jedoch in bestimmten Fällen zu Benutzungsproblemen.However, these carriers can cause problems in use in certain cases.
Da die Kanäle in unterschiedlichen Bereichen des Trägers liegen, funktionieren sie nicht in gleicher Weise, und man stellt fest, daß bestimmte Kanäle bevorzugt einer Verstopfung ausgesetzt sind.Since the channels are located in different areas of the carrier, they do not function in the same way and it is found that certain channels are preferentially subject to blockage.
Außerdem erweist es sich als schwierig, sehr dickflüssige und/oder heterogene Fluide zu filtrieren, die faserartige Fest stoffmaterialien umfassen, die von Textilien oder Papierwaren herrühren.In addition, it is difficult to filter very viscous and/or heterogeneous fluids that contain fibrous solids material materials derived from textiles or paper goods.
In der Tat kann sich eine Faser im Falle von bekannten Vielkanal-Monolithen, die im allgemeinen mehr als sieben Kanäle von quadratischem oder kreisförmigem Querschnitt haben, wie sie in US-A-4069157 und EP-A-470340 beschrieben sind, in mehreren Kanälen gleichzeitig befinden, am Eintritt des Monolithen, und die Wiederholung des Phänomens kann zur Verstopfung des Monolithen führen.Indeed, in the case of known multi-channel monoliths, generally having more than seven channels of square or circular cross-section, as described in US-A-4069157 and EP-A-470340, a fibre can be located in several channels at the same time, at the entrance of the monolith, and the repetition of the phenomenon can lead to clogging of the monolith.
Monolithen mit einer Vielzahl von kleinen Kanälen sind somit nicht für das Filtern von Fluiden dieser Art geeignet.Monoliths with a large number of small channels are therefore not suitable for filtering fluids of this type.
WO 93 07959 A beschreibt einen monolithischen porösen Träger für eine Filtermembran, die Kanäle umfaßt, die im Innern des Trägers in identischer Weise angeordnet sind. Die Dicke der Zwischenkanaltrennwände vergrößert sich nach außen hin.WO 93 07959 A describes a monolithic porous support for a filter membrane comprising channels arranged in an identical manner inside the support. The thickness of the inter-channel partition walls increases towards the outside.
Die vorliegende Erfindung schlägt insbesondere zum Lösen des oben genannten Problems eine technische Lösung vor, die es einerseits erlaubt, den Durchmesser der Kanäle zu vergrößern und andererseits, die Zahl der Kanäle zu verringern, wobei gleichzeitig die größtmögliche Filteroberfläche und geeignete mechanische Eigenschaften bewahrt werden.In particular, to solve the above-mentioned problem, the present invention proposes a technical solution which, on the one hand, allows the diameter of the channels to be increased and, on the other hand, the number of channels to be reduced, while at the same time maintaining the largest possible filtering surface and suitable mechanical properties.
Die vorliegende Erfindung betrifft in der Tat einen monolithischen porösen Träger für Filtermembranen, wie er in Anspruch 1 beansprucht ist, mit Kanälen, deren innere Oberfläche die Membranen trägt, dadurch gekennzeichnet, daß der Träger mindestens zwei Kanäle umfaßt, wobei jeder Kanal aufweist:The present invention relates in fact to a monolithic porous support for filter membranes as claimed in claim 1, with channels whose inner surface supports the membranes, characterized in that the support comprises at least two channels, each channel comprising:
- a) im wesentlichen identische Querschnitte,- a) essentially identical cross-sections,
- b) Zwischenkanaltrennwände und Trennwände zu dem Äußeren des Trägers von im wesentlichen konstanter Dicke und- b) inter-channel partitions and partitions to the exterior of the beam of substantially constant thickness and
- c) eine Trennwand zu dem Äußeren des Trägers von im wesentlichen gleicher Oberfläche.- c) a partition wall to the exterior of the support of substantially the same surface area.
Empfohlen wird, daß die Zahl der Kanäle zwischen einschließlich 2 und 8 liegt, vorzugsweise zwischen einschließlich 3 und 4.It is recommended that the number of channels be between 2 and 8 inclusive, preferably between 3 and 4 inclusive.
Außerdem sind die spitzen Winkel der Kanalabschnitte abgerundet, um die Beladungsverluste und das Verstopfen zu verringern.In addition, the acute angles of the channel sections are rounded to reduce loading losses and clogging.
Der Träger weist einen Querschnitt auf, der eine zentrale Symmetrieachse aufweist. Dieser Querschnitt kann vorteilhaft kreisförmig oder sechseckig sein.The carrier has a cross-section that has a central axis of symmetry. This cross-section can advantageously be circular or hexagonal.
In dem erfindungsgemäßen Monolithen sind alle Kanäle im Innern des Monolithen in identischer Weise angeordnet. Unter diesen Bedingungen funktionieren alle Kanäle während des Filterns in analoger Weise, d. h., daß alle Kanäle in im wesentlichen identischer Weise filtern und sich verstopfen, und es gibt kein bevorzugtes Verstopfen.In the monolith according to the invention, all channels inside the monolith are arranged in an identical manner. Under these conditions, all channels function in an analogous manner during filtering, i.e. all channels filter and clog in an essentially identical manner and there is no preferential clogging.
Außerdem erlaubt es der erfindungsgemäße Träger, während er den Vorteil der Monolithen bezüglich des Einzelrohrs bewahrt, bei vorgegebenem Platzverbrauch eine größere abgewickelte Oberfläche der Membranen zu erhalten, wobei er gleichzeitig einen bedeutenden Querschnitt der Kanäle für das Durchströmen des zu filternden Fluids bewahrt.Furthermore, the support according to the invention, while maintaining the advantage of the monoliths with respect to the single tube, makes it possible to obtain a larger developed surface of the membranes for a given space consumption, while at the same time preserving a significant cross-section of the channels through which the fluid to be filtered can flow.
Auch wenn der erfindungsgemäße Monolith vorzugsweise aus keramischem Material ist, wie beispielsweise gemäß den Lehren der vorgenannten US-A-4069157, EP-A-470340 und EP-A-585152, kann er auch aus Metall, aus Kohlenstoff und allgemein aus beliebigen anorganischen Materialien sein.Although the monolith according to the invention is preferably made of ceramic material, such as, for example, according to the teachings of the aforementioned US-A-4069157, EP-A-470340 and EP-A-585152, it can also be made of metal, carbon and generally of any inorganic material.
Im Falle der Verwendung keramischen Materials wird erfindungsgemäß für den Fall der Verwendung eines Trägers von zylindrischem Querschnitt ein äußerer Durchmesser, der vorteilhaft zwischen 6 und 40 mm liegt, und eine Länge empfohlen, die zwischen 10 cm und 2 m liegt. Die Dicke der Zwischenkanaltrennwände und der Trennwände jedes Kanals zur äußeren Oberfläche des Trägers liegt allgemein zwischen 0,5 und 3 mm.In the case of using ceramic material, according to the invention, in the case of using a support with a cylindrical cross-section, an external diameter advantageously lying between 6 and 40 mm and a length lying between 10 cm and 2 m is recommended. The thickness of the inter-channel partitions and of the partitions of each channel to the external surface of the support is generally between 0.5 and 3 mm.
Die erfindungsgemäßen Träger können durch klassische Verfahren der Extrusion einer keramischen Masse durch eine Düse geeigneter Form hergestellt werden. In diesem Falle wird empfohlen, der Lehre aus der vorgenannten EP-A-585152 zu folgen.The supports according to the invention can be produced by conventional methods of extruding a ceramic mass through a nozzle of suitable shape. In this case, it is recommended to follow the teaching of the aforementioned EP-A-585152.
Vorzugsweise haben die verwendeten Düsen eine Form, die dahingehend angepaßt ist, daß die einander gegenüberliegenden Winkel der Kanäle abgerundet sind.Preferably, the nozzles used have a shape that is adapted so that the opposing angles of the channels are rounded.
Der Träger wird anschließend gefrittet. Dieser Träger hat im allgemeinen einen Porendurchmesser, der zwischen 2 und 10 um liegt. Auf diesem Träger lagert man, im Innern der Kanäle und eventuell auf der äußeren Oberfläche des Trägers, eine mineralische und/oder organische Membran zum Mikrofiltern (Porendurchmesser zwischen 0,1 und 1,5 um) oder zum Ultrafiltern (Porendurchmesser zwischen 2 nm und 0,1 um) ab. Diese Membranen werden durch Ablagern mindestens einer Schicht von anorganischen Teilchen und/oder eines Polymers hergestellt, indem beispielsweise die Ausgangsstoffe und das Verfahren verwendet werden, die in der vorgenannten Patentanmeldung EP-A-585152 beschrieben sind.The support is then fritted. This support generally has a pore diameter of between 2 and 10 µm. A mineral and/or organic microfiltration membrane (pore diameter of between 0.1 and 1.5 µm) or ultrafiltration membrane (pore diameter of between 2 nm and 0.1 µm) is deposited on this support, inside the channels and possibly on the external surface of the support. These membranes are prepared by depositing at least one layer of inorganic particles and/or a polymer, using, for example, the starting materials and the process described in the aforementioned patent application EP-A-585152.
Die erfindungsgemäßen Monolithen sind besonders von Interesse, um Suspensionen zu filtern, die sehr mit Feststoffmaterialien beladen sind und/oder sehr dickflüssig sind, wie beispielsweise etwa bestimmte Gärmoste, Papierwarenabwässer, Suspensionen aus faserförmigen Produkten und aus Erdölprodukten.The monoliths according to the invention are of particular interest for filtering suspensions that are heavily loaded with solid materials and/or are very viscous, such as, for example, certain fermentation musts, paper product waste water, suspensions of fibrous products and of petroleum products.
Weitere Vorteile und Eigenschaften der Erfindung werden beim Lesen des folgenden Ausführungsbeispiels besser ersichtlich, das zur Erläuterung und keineswegs einschränkend gegeben wird, wobei Bezug auf die beigefügte Zeichnung genommen wird, in der:Further advantages and characteristics of the invention will become more apparent on reading the following embodiment, given by way of illustration and not in a limiting sense, with reference to the accompanying drawings in which:
- Fig. 1 ein Schnitt eines zylindrischen Trägers mit 3 Kanälen ist,- Fig. 1 is a section of a cylindrical support with 3 channels,
- Fig. 2 ein Schnitt eines zylindrischen Trägers mit 5 Kanälen ist,- Fig. 2 is a section of a cylindrical support with 5 channels,
- Fig. 3 ein Schnitt eines Trägers von sechseckigem Querschnitt mit 6 Kanälen ist.- Fig. 3 is a section of a beam of hexagonal cross-section with 6 channels.
- Fig. 4 ein Schnitt eines Trägers von sechseckigem Querschnitt mit 4 Kanälen ist.- Fig. 4 is a section of a beam of hexagonal cross-section with 4 channels.
In Fig. 1 sieht man einen monolithischen Träger 1 aus Keramik mit drei im wesentlichen identischen Kanälen, 2, 3, 4.Fig. 1 shows a monolithic carrier 1 made of ceramic with three essentially identical channels, 2, 3, 4.
Man sieht, daß jeder Kanal Querschnitte von im wesentlichen analoger Form und Zwischenkanaltrennwände 5, 6 und 7 von im wesentlichen konstanter Dicke aufweist, wobei jeder Kanal außerdem eine Trennwand 8, 9 und 10 zu dem Äußeren des Trägers von im wesentlichen gleicher Dicke und gleicher Oberfläche aufweist.It can be seen that each channel has cross-sections of substantially analogous shape and inter-channel partitions 5, 6 and 7 of substantially constant thickness, each channel also having a partition 8, 9 and 10 to the outside of the support of substantially the same thickness and the same surface area.
Man sieht außerdem, daß die spitzen Winkel 11, 12 und 13 im Hinblick darauf abgerundet sind, die Zirkulation des zu filtrierenden Fluids zu verbessern und das Ablagern der Membran 14, 15, 16, die auf der inneren Oberfläche jedes entsprechenden Kanals 2, 3 und 4 abgelagert wird, zu erleichtern.It can also be seen that the acute angles 11, 12 and 13 are rounded with a view to improving the circulation of the fluid to be filtered and to facilitating the deposition of the membrane 14, 15, 16 which is deposited on the inner surface of each corresponding channel 2, 3 and 4.
In Fig. 2 sieht man, daß ein Träger von kreisförmigem Querschnitt 5 identische Kanäle umfaßt.In Fig. 2 it can be seen that a carrier of circular cross-section comprises 5 identical channels.
In den Fig. 3 und 4 sieht man, daß ein Träger von sechseckigem Querschnitt 6 bzw. 4 identische Kanäle umfaßt.In Figs. 3 and 4 it can be seen that a beam with hexagonal cross-section comprises 6 or 4 identical channels.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9411568A FR2724850B1 (en) | 1994-09-28 | 1994-09-28 | POROUS MONOLITHE SUPPORT FOR FILTRATION MEMBRANE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69515773D1 DE69515773D1 (en) | 2000-04-27 |
| DE69515773T2 true DE69515773T2 (en) | 2000-10-12 |
Family
ID=9467353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69515773T Expired - Lifetime DE69515773T2 (en) | 1994-09-28 | 1995-08-24 | Monolithic, porous support for filtration membranes |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5895572A (en) |
| EP (1) | EP0704236B1 (en) |
| JP (1) | JP3150275B2 (en) |
| AT (1) | ATE190864T1 (en) |
| CA (1) | CA2159264C (en) |
| DE (1) | DE69515773T2 (en) |
| DK (1) | DK0704236T3 (en) |
| ES (1) | ES2145232T3 (en) |
| FR (1) | FR2724850B1 (en) |
| GR (1) | GR3033506T3 (en) |
| PT (1) | PT704236E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004060183A1 (en) * | 2004-12-14 | 2006-07-06 | Saint-Gobain Industriekeramik Rödental GmbH | Tangential flow filter, especially for motor vehicle exhaust gas, comprises a coarsely porous support containing flow channels of defined shape and arrangement, and finely porous membranes in the channels |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2720953B1 (en) * | 1994-06-08 | 1996-08-30 | Tami Ind | Multichannel inorganic element for the filtration of a fluid. |
| US6129973A (en) | 1994-07-29 | 2000-10-10 | Battelle Memorial Institute | Microchannel laminated mass exchanger and method of making |
| FR2741821B1 (en) * | 1995-12-05 | 1998-02-20 | Tami Ind | INORGANIC FILTRATION TUBULAR ELEMENT HAVING INCREASED FILTRATION SURFACE AND MECHANICAL STRENGTH |
| EP1052013A1 (en) * | 1997-04-09 | 2000-11-15 | Societe Des Ceramiques Techniques | Macroporous support having a permeability gradient and method for its production |
| US8062521B2 (en) * | 1998-05-29 | 2011-11-22 | Crystaphase Products, Inc. | Filtering medium and method for contacting solids-containing feeds for chemical reactors |
| FR2785831B1 (en) * | 1998-11-18 | 2001-11-23 | Orelis | POROUS MONOLITHE SUPPORT OF A FILTER ELEMENT AND FILTER ELEMENT |
| FR2805331B1 (en) * | 2000-02-21 | 2002-05-31 | Ceramiques Tech Soc D | MULTICHANNEL ELEMENT AND METHOD FOR MANUFACTURING SUCH AN ELEMENT |
| US7722832B2 (en) | 2003-03-25 | 2010-05-25 | Crystaphase International, Inc. | Separation method and assembly for process streams in component separation units |
| US7875176B2 (en) * | 2009-03-06 | 2011-01-25 | Porous Media Corporation | Membrane module for fluid filtration |
| FR2957267B1 (en) * | 2010-03-10 | 2012-04-27 | Technologies Avancees Et Membranes Ind | NOVEL SUPPORT GEOMETRY AND FILTRATION MEMBRANE |
| US10744426B2 (en) | 2015-12-31 | 2020-08-18 | Crystaphase Products, Inc. | Structured elements and methods of use |
| US10054140B2 (en) | 2016-02-12 | 2018-08-21 | Crystaphase Products, Inc. | Use of treating elements to facilitate flow in vessels |
| EP4076719A1 (en) | 2019-12-20 | 2022-10-26 | Crystaphase Products Inc. | Resaturation of gas into a liquid feedstream |
| CA3192003A1 (en) | 2020-09-09 | 2022-03-17 | Crystaphase Products, Inc. | Process vessel entry zones |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737043A (en) * | 1972-06-12 | 1973-06-05 | Aqua Chem Inc | Membrane module |
| US4069157A (en) | 1975-11-20 | 1978-01-17 | E. I. Du Pont De Nemours And Company | Ultrafiltration device |
| EP0306350B1 (en) * | 1987-09-04 | 1991-08-14 | Ngk Insulators, Ltd. | Honeycomb structure for fluid filtration |
| US5104546A (en) * | 1990-07-03 | 1992-04-14 | Aluminum Company Of America | Pyrogens separations by ceramic ultrafiltration |
| US5223318A (en) | 1990-08-06 | 1993-06-29 | Corning Incorporated | Titania substrates and fabrication |
| DE4134223C1 (en) * | 1991-10-16 | 1992-11-12 | Stora Feldmuehle Ag, 4000 Duesseldorf, De | |
| FR2693921B1 (en) | 1992-07-24 | 1994-09-30 | Tech Sep | Monolithic ceramic support for tangential filtration membrane. |
| FR2720953B1 (en) * | 1994-06-08 | 1996-08-30 | Tami Ind | Multichannel inorganic element for the filtration of a fluid. |
-
1994
- 1994-09-28 FR FR9411568A patent/FR2724850B1/en not_active Expired - Fee Related
-
1995
- 1995-08-24 DK DK95401943T patent/DK0704236T3/en active
- 1995-08-24 ES ES95401943T patent/ES2145232T3/en not_active Expired - Lifetime
- 1995-08-24 AT AT95401943T patent/ATE190864T1/en not_active IP Right Cessation
- 1995-08-24 EP EP95401943A patent/EP0704236B1/en not_active Expired - Lifetime
- 1995-08-24 PT PT95401943T patent/PT704236E/en unknown
- 1995-08-24 DE DE69515773T patent/DE69515773T2/en not_active Expired - Lifetime
- 1995-09-14 JP JP26101395A patent/JP3150275B2/en not_active Expired - Fee Related
- 1995-09-19 US US08/530,934 patent/US5895572A/en not_active Expired - Fee Related
- 1995-09-27 CA CA002159264A patent/CA2159264C/en not_active Expired - Fee Related
-
2000
- 2000-05-25 GR GR20000401197T patent/GR3033506T3/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004060183A1 (en) * | 2004-12-14 | 2006-07-06 | Saint-Gobain Industriekeramik Rödental GmbH | Tangential flow filter, especially for motor vehicle exhaust gas, comprises a coarsely porous support containing flow channels of defined shape and arrangement, and finely porous membranes in the channels |
| DE102004060183B4 (en) * | 2004-12-14 | 2011-06-16 | Saint-Gobain Industriekeramik Rödental GmbH | Tangential flow filter with optimized duct geometry and arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE190864T1 (en) | 2000-04-15 |
| PT704236E (en) | 2000-07-31 |
| EP0704236A1 (en) | 1996-04-03 |
| ES2145232T3 (en) | 2000-07-01 |
| FR2724850A1 (en) | 1996-03-29 |
| DE69515773D1 (en) | 2000-04-27 |
| CA2159264C (en) | 2002-03-26 |
| CA2159264A1 (en) | 1996-03-29 |
| JP3150275B2 (en) | 2001-03-26 |
| GR3033506T3 (en) | 2000-09-29 |
| FR2724850B1 (en) | 1997-08-01 |
| JPH08173771A (en) | 1996-07-09 |
| US5895572A (en) | 1999-04-20 |
| DK0704236T3 (en) | 2000-08-28 |
| EP0704236B1 (en) | 2000-03-22 |
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| 8364 | No opposition during term of opposition |